/*    Copyright 2013 10gen Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects
 *    for all of the code used other than as permitted herein. If you modify
 *    file(s) with this exception, you may extend this exception to your
 *    version of the file(s), but you are not obligated to do so. If you do not
 *    wish to do so, delete this exception statement from your version. If you
 *    delete this exception statement from all source files in the program,
 *    then also delete it in the license file.
 */

#pragma once

#include <v8.h>
#include <v8-profiler.h>
#include <map>

#include "mongo/base/string_data.h"
#include "mongo/db/jsobj.h"

namespace mongo {

    /** Collect CPU Profiling data from v8. */
    class V8CpuProfiler {
    public:
        /** Start the CPU profiler */
        void start(v8::Isolate* isolate, const StringData name);

        /** Stop the CPU profiler */
        void stop(v8::Isolate* isolate, const StringData name);

        /** Get the current cpu profile */
        const BSONArray fetch(const StringData name);
    private:
        void traverseDepthFirst(const v8::CpuProfileNode* cpuProfileNode,
                                BSONArrayBuilder& arrayBuilder);

        typedef std::map<std::string, const v8::CpuProfile*> CpuProfileMap;
        CpuProfileMap _cpuProfiles;
    };

}
